The whole 'fastest memory' halo product race is a bit of a farce. In terms of DDR3, Corsair started the race back in 2007 with their first set of Dominator modules, running at 1600Mhz, 10-8-8-24. This has been followed and bested, mainly by Corsair, but with sneak appearances by Kingston, G.Skill and Patriot.

Available as single sticks from the Corsair website, these new GTX4 modules will set you back $325 for each 2GB stick. With rather slack timings of 9-11-10-30 at 1.65V, each module is handtested using a Core i7 Lynnfield CPU on a Gigabyte P55 motherboard. Michal Nowicki, Corsair's inhouse overclocker, advises that 'most CPUs will require sub-ambient cooling to run [these modules] at their maximum speed'.
Despite the lifetime warranty and the ability to boast about a 'halo' product, I can't see a point in these sticks - even for overclockers. With such slack timings to begin with, I wonder just how much headroom is available, when other 2400+ kits with better timings are available. At $325 a stick, you really are shooting yourself in the foot.
But alas, these modules will sell, and Corsair know they will.
A brief (and abridged) history on the latest and greatest memory is summarised below:

The memory kit that G.Skill offers here is impressive. Not once did we stumble into any stability issues or anything. With the right motherboard, and the ASUS motherboards mentioned really help out, you can achieve 2000 MHz C7 very easily and within seconds without the need for manual tweaking and complex overclocking. Do yourself a favor though, make sure your processor has unlocked multipliers, as 2000 MHz memory screams for an overclock on the processor as well. Since you are pretty tied to the baseclock at 250 MHz and unlocked multiplier will obviously do wonders for you.

The bottom line: G.Skill's DDR3-2000 CAS7 Flare memory is intended for a very small audience, but if you are a hardware tweaker, aficionado or overclocker you might as well be a match for this kind of memory. The results are shy to find, but the memory itself will definitely not disappoint.